2015年5月31日星期日

Brief sine wave inverter

Inverters have square wave inverter and sine wave inverter two categories, square wave inverter although single-cylinder structure, low cost, but due to harmonics too, is not suitable for inductive, capacitive circuit work, and sine wave inverter on the market price is relatively high, so some users difficult to accept, thus limiting its promotion and application. A brief introduction and practical 600w car inverter.
Sinusoidal pulse modulation Solar power inverters is the key, they all require a sine wave generator, use it to generate the sine wave and triangular wave (sawtooth) were compared realize sine wave modulation. Many ways and means to generate a sine wave. Methods commonly employed analog and digital two, through a variety of different ways to achieve. As with a filter circuit with a sine wave oscillator generator and the positive feedback amplifier circuit, which is the most common classic circuit, but the adjustment is more complex, frequency accuracy is not high. There are other methods used to generate a sine wave function generator circuit. With large-scale ASIC and MCU constituted sinusoidal pulse width modulation circuit. Using EPROM and D / A converter reference sinusoidal voltage generation is a common method. DSP processors with high-speed data is the latest of a pulse width modulation method, the introduction of computer technology, we need to increase the number of software development and design work, despite the complexity and cost of the circuit coefficient has increased, but it really is great A good design approach capacity 6000w power inverter.

2015年5月28日星期四

The development prospects of solar inverter uses and processes

Solar AC power generation system consists of solar panels, charge controllers, inverters and batteries composed. Mainly composed of electronic components, it does not involve machinery parts, thus generating equipment is extremely refined, reliable, stable, long life, easy installation and maintenance. Compared with the conventional thermal power system, solar power system in addition to polluting emissions, but also has short construction period and can be used roofing advantage. Wherein the with bypass inverter is a key component of the entire solar system. Because of the direct solar energy output are generally 12VDC, 24VDC, 48VDC. If you want to 220VAC to provide electrical power, solar power system needs to be issued by the DC energy into AC power, this time on the need to use an inverter. In addition, it can be a variable DC output of photovoltaic cells to convert into a clean sinusoidal current at 50 or 60Hz, it is also ideal for providing power to the commercial power grid or local grid. With the development of the solar PV market, solar inverter market will inevitably bring a new spring.
Generally speaking, there are step-up transformer and two types of isolation transformer is applied in the 5000w inverter charger electronic transformers. Since the input DC voltage than AC output voltage level is higher, but the solar panels provide input source voltage is usually not so high, so the system to the AC output side of the step-up transformers to boost voltage. At the same time, both sides need to isolate the circuit transformer isolation to prevent flow AC DC side, improved circuit protection, but also increase the safety of users.
Power inverter can be divided by converting frequency conversion and high-frequency transformation. Frequency transformation is the use of discrete devices or manifold generate 50Hz square wave signal, and then use the signal to push the power switch, the use of frequency step-up transformer to generate 220V AC. As a result of frequency transformer, bulky, heavy, high prices, currently used in large-scale solar photovoltaic power plants. But as the technology matures and the magnetic power MOSFET improving the quality, high-frequency inverter transform it to market. High-frequency 12v car inverter is converted by high-frequency DC / DC conversion technology, the first low-voltage DC power to high-frequency low-voltage AC, after the pulse transformer and then rectified high voltage DC boost.

2015年5月25日星期一

The inverter schematics and principles explain

The inverter is a direct current energy (battery, battery) into alternating current (typically 220 volts 50HZ sine wave or square wave) devices. The most common emergency power, usually the bottle is inverted into 220V DC communication. Simply put, the 4000w solar inverter is a kind of direct current into alternating current devices.
Whether in remote villages or the wild need or emergency power, the inverter is a very good choice. More common is the engine room of the UPS power will be used, when a sudden power failure, UPS can reverse into a DC battery Reid exchange for computer use, to prevent data due to sudden power loss caused problems. Able to provide uninterrupted power supply, it has a certain security and reliability, stability. The 1000w charger inverter can also be supporting the use of the generator can effectively save fuel, reduce noise, wind energy, solar energy, the inverter is essential. The Pure sine wave power inverter can also use small cars, boats, portable AC power supply equipment in the field.